Carbureter.



VIl() iiErTED STATES' PATENT oEEreE.

WILLIAM P. BEPPE, or Ber SHORE, NEW Yonx.

CARBURETER.

Specification of Letters Patent.

Patented Dec. K'lis.

Application led August 4, 1914. Serial No. 854,924.

To all Awhom t may concern.' j Be it known that I, l/VILLIAM P. DEPP, a citizen of the United States, and resident of'Bay Shore, county of Suffolk, and State of New York, have invented certain new and useful Improvements 1n Carbureters, of which the following is a specification.

lMy improvements relate to carbureters ofI the Stromberg type and-are intended to improve the action of the device and facilitate its usemore particularly with lower grades of gasolene which contain a certain percent- .age of the heavier oils, or with kerosene or the like. With oil' fuel-s of this character evaporation does not f take place readily without the assistance of heat and until s u'fiicient heat can be applied to the spray, mixed with the air passing through the Venturi tube, the spray should not be allowed to come in Contact with the walls of the mixing chamber or outlet thereof, if possible. With l the ordinary butteriiy throttle valve the discharge from the Venturi tube is at once deflected to the walls of the mixing chamber with the result that the unvaporized particles of oil at once coalesce and run back and 4cannot readily be vaporized. This results in a great'loss of fuel and consequent decrease of eiiiciency,"rated as miles per gallon of fuel oil.

With my improved throttle valve. located directly above the Venturi tube, and adapt- `ed to-open centrally, there is no obstruction to theY passage of the mixture therethrough centrally of the tube so that the spray being held in suspension by the speed of the stream of mixture does not have the same opportunity' to contact with ,the side .walls in passing toward the manifold or intake passage of the engine. Furthermore lrhave preferably tapered the mixing chamber.l outlet approaching the throttle so as to produce,

kin effect, a second Venturi tube the constricted portion of which is at the centrally opening valve. This I have found makes for increased efficiency, particularly as the centrally opening valve is adapted to vary 'the constriction offthe stream according to the requirements.

For starting with kerosene and the lower grades of gasolene, when the engine is cold, I have provided a small electric heating coil interposed between the throttle valve and the end of the Venturi tube against which the spray from the nozzle is adapted to strike, the heat in the coil being sufficient to vaporize the oil so that the mixture passing through the central opening of the throttle valve is suiiiciently gasiiied to fire when the englne is turned over. After the engine has been run for a few minutes the heating coil can bedisconnected' if desired.

My improved carbureter is particularly adapted to be used in connection with thewell known Stanley mixer and Depp vaporizer, the latter being shown and described in my application Serial No. 832,209, filed April 16, ,1914.

l One form of my improved carbureter is shown in the accompanying drawings of which- Figure l is aside elevation partially in section; Fig. 2 is a top plan view, throttle ordinary carbureter iioaty chamber connected by means of a tube 2 with the primary nozzle 3 'and an auxiliary nozzle 4 substantially as in well known Stromberg carbureter. Thetube 2 traverses the primary air inlet 54 and is connected with a Venturi tube 6 which is concentric with the primary nozzle 3. An auxiliary air inlet 7 is connected with alateral passage 8 leading over the auxiliary nozzle 4 into the mixing chamber 9 surrounding the upper end of the Venturi tube. The auxiliary air inlet 7 is'closed b v the usual balanced valve 10 whichis, in the present instance, provided with adjustable springs-11 and `12 arranged above and below the valve in the usual manner and adapted lto regulate the amount of air admitted according to the speed of the engine or the vacuum produced inthe mixing chamber.

The features thus far described are substantially the regular construction of the Stromberg carbureter and the details of construction and operation thereof neednot be further discussed except in coperation with my improved throttle and heating device. Preferably' the mixing chamber in my improved carbureter is slightly elongated at 13 and the interior thereof is tapered or constricted toward 'the top so that the constrict- 'about halfopen, Fig. 3 1s a vertical section ed portion is substantially equal in diameter constricte'd portion of the mixing chamber outlet I insert a centrally opening throttle valve,' referably consisting of two seg-4 14 and 15 are preferably integral with disks n intake valves of the engine.

mental eaves 14 and 15 one overlapping the 'other and both provided with semicircular cut-,away portions or circular openings adapted to provide a shutter like valve the opening of which is substantially equivalent to the diameter of the constricted portion of the mixing chamber when the valve is fully opened. The constricted portion or Venturi like tubular outlet of the mixing chamber is preferably circular in cross section and the side walls at diametrically opposite points, .are perforated at 1G with segmental slots through which` the leaves 14 and 15 ofthe 4 throttle valve are adapted to be inserted.

The slots 16 are long enough to permit re-A ciprocation of the valve leaves to open and close the valve as desired. The valve leaves 17 and 18 which are adapted to be inserted in laterzal bosses 19 and 20 located on opposite sides'of the mixing chamber and counter bored to receive the disks substantially as indicated in Fig. 4 of the drawing. The valve leaves 14 and 15- project through the segmental slots 16, which open into the counterbores of the bosses 19 and 20, the respective disks 17 and 18 being adapted to seal the slots 16. Each of the disks 17 and 18 is provided with an outwardly projecting central boss or pintle 21 and 22 and the disks with their respective valve leaves are adapted to be held in place, and permitted a limited circular. vibratory movement, b means of annular caps 23 and 24 screwe on to the respective bosses on opposite sides of the outside of the mixing chamber. Any suitable means for simultaneously moving the valve leaves in opposite directions are provided preferably consisting-of levers 25 connected by means of links 26 with a transversely disposed lever 27 pivoted at 28 to the under side of the auxiliary air inlet 12 substantially as illustrated in Figs. 1 and 2 of the drawings. One of the levers 25 is adapted to be connected in the usual way with throttle controlling lever on the steering wheel ofthe automobile (not shown). Above the valve leaves 14 and 15 the tube againincreases -in diameter asindicated at 29 wherethe outlet f from the mixing chamber may be connected with a vaporizer or other pipe leading to the pose of connecting a carbureter to the intake pipes the usual flange 30 is providedsubstantially as indicated.

It will be noted'that inthis construction the tubular mixing chamber is concentric. air Venturi tube *6 which as v with primary previously stated is concentric with the pri- :mary nozzle in from the side of the Venturi tube 6, will circulate around the same and be drawn upward and mixed with primary mixture by passing :through the Venturi like outlet For the pur- 3.` The auxiliary air,'coming t of the mixing chamber, the opening ofl which by means of my 'centrally opening throttle valve will always be central of or in a-al alinement with Venturi tube 6 below it. This is, particularly desirable .when using kero- 'sene or the lower grades of fuel oils for, as

previously explained, these oils when thrown out in a spray from the nozzle should be kept from contact with thesides of the mixing chamber or the tubes leading therefrom until thoroughly vaporized` Iand mixed with the air.' This I accomplish by having the throttle valve open centrally andthe opening remain central vof the chamber from the timev it begins to open until it'reaches fullopenmg.

When using keroisene'withl the ordinary carbureter it is :difficult 'to start the engine, particularly when all of the pipes and parts are cold. F or this reason I have' provided lypreferably located just above the upper end of the- Venturi tube 6 and below the throttle valve leaves 14 and 15, transversely of the axis of ,the mixing chamber. yThe ends of the heating coil are carried through the walls of the mixing chamber at 32 and 33 and insulated therefrom in any usual or preferred manner and the coil is adapted to be carbureter with an electric heating coil connected .to a source of electricity which" connections (not shown) may be made inthe A usual manner.

With this device in place, in combination pass up through the centrally opening throtv tle valve. During this time the mixture will have little or no opportunity of coming in contact with the side walls'iof. the mixing chamber so thatjcondensation thereof 'or coalescence of the particles cannot readil take place. The mixture thus produced wi l j be' gasified to such an extent thatv upon passing into the engine it Awill readily ignite.

I have thus devised a carbureter adapted to be usedwith either gasolne of any grade K ,or withkerosene as desired.

details of construction of the various' elements of m invention may be made without departing rom the accompanying claims.

I claim; y

Venturi tube like' mixing chamber, a Ven`- turi tube exte ding into the lower part and' :central thereo ,y a, fuel nozzle ce'ntralpof said Venturi tubeand a centrally opening throt" 7'.

.tle valve in the mixing chamber 'above said y"ventur tube at the' point where saldjVenturi' ,spirit and scopeof the 1. ln ya carbureter the combination of u'- Various modifications of the mechanical p l izo ift

iike chamber is of leastcross sectional area whereby said valve is adapted to produce a single unobstructed central opening for the huge ofthe fuel mixture. In a carbureter the combination of a Venturi tube like mixing chamber, a Venturi tube extending into the lower part and central thereof, a fuel nozzle central of said Venturi tube and a throttle valve in the mixla ing chamber above said Venturi tube at the point where said mixing chamber is of least crosssectional area and adapted to open centrally of said chamber and tube, the diameteruf thc valve opening, when fully open, bev 3; less tlian the diameter of the mixing chamber at the end of the Vent-uri tube.

In a carbureter the combination of a Venturiy tube .like mixing chamber, a Venturi tube extending into the lower part and a central thereof, a fuel nozzle central' of said Venturi tube and a throttle valve in the mixing chamber above saidVent'uri tube at the point where said mixing chamber is of least crosssectional area, comprising leaves adapted to be moved outwardly from the center to cause the y,valve to open centrally of said chamber and tube, the full opening of the valve being less than the diameter of the chamber, below the valve, where it surac rounds said Venturi tube.

4. In a carbureter the combination of a Venturi tube like mixing chamber, a Venturi tube extending into the lower part and centrai thereof, a fuel nozzle central of said Venturi tube, a throttle valve in the mixing chamber' above said Venturi tube at the point where said mixing chamber is of least crosssei-ticnal area, comprising leaves adapted to be moved outwardly from the center to cause lo the valve to open centrally of said chamber and tube, the full opening of the valve being less than the diameter of the chamber, below ,the vale, where it surrounds said Venturi tube. and means for mowing said leaves sirio multaneously in opposite directions.

5. In a carbureter the combination of a Venturi like tubular mixing chamber, a Venturi tube in the lower part and central thereof, a fuel nozzle central of said Venturi tube, au an air inlet below the Venturi tube, an auxiliary air inlet adjacent to and surrounding he upper end of the Venturi tube, and a i trally opening throttle valve in the con- ,n Virtud `portion of said Venturi like mixing Cil ta chamber adapted to produce a single unob.-v

slriurl'ed central (mening for the passage of thc fuel mixture from both air inlets.

u. ln a rarbureter the combination wlth prima-ry and ser'zoiidarv fuel nozzles of pri-v uuiry and auxiliary air.I inlets, the primary `inlet terminating iua Venturi tube concentric oi" the Ypr'in'i'ary nozzle while 'the auxiliarj,Y air p ssage lies transversely ofthe' :1' r uulnry noi.

Aranged in the lower part of said chamber fthe valve leavesto slide into..v v f '11. `In' a carburetpr the combination of, a Venturi tube'likejmixing chamber intofxvhkzh] .le of a Venturi -like tubular ruxing chamber surroundinfnsaid Venturi* tube, and a centrally opening throttle valve across the mixing chamber at the constrict'ed portion thereof above said Venturi tube, said valve being adapted in opening to produce a single unobstructed central opening through which both Yprimary ,and auxiliary mixtures are adapted to pass and become blended'.

7.' In a carbureter the combination with a Venturi like tubular mixing chamber, a fuel nozzle, and Venturi tube concentrically arranged and a throttle valve of an electrical heating coil between the Venturi tube and said valve in the path of spray from said nozzle, said heating coil being located within the flaring mouth of said Venturi like mixing chamber whereby the mixture is adapted to pass through a channel gradually decreasing in area toward said throttle valve.

-8. In a carbureter the combination with a Venturi like tubular mixing chamber, a fuel S nozzle and Venturi tube concentrically ar ranged and a throttle valve'of a transversely arranged electric heating coil between said valve and the end of said Venturi tube in the line of discharge thereof, said heating coil being located within the flaring mouth of said Venturi like mixing chamber whereby the mixture is adapted to pass through a channel gradually decreasing in area toward said throttle valve` 9. In a carbureter the combination of a Venturi tube like mixing chamber, a Venturi tube and a fuel nozzle concentrically arand a centrally opening two leaved throttle valve located above said Venturi tube at the point where said Venturi tube like chamber is of least cross sectional area, each of the leaves of said valve being concavo-convex, the inner concave surface of the leaves being adapted to direct the flow of mixture i toward the opening between said leaves.

10. In a carbureter the combination of a Venturi tube like mixing chamber, a Venturi tube and a fuel nozzle concentrically arranged in the lower part of said chamber a centrally opening two leaved throttle valve located above said Venturi tube at the point where said Venturi tube like chamber is of least cross sectional'arca, a circular disk connected with each valve leaf the leaves and `disks beingr revoluble about a common axisv to open and close said valve,rsa1 d vleaves being concaw'ieconvex whereby .the inner c oiicarefsurfaces thereof are adapted to directr i the :flow ofimixturetoward 'tilieopenin'g bef- `tween said leaves and' means for -turniiigf'- said leaves,simultaneously in opposite directions,r thef walls kof said chamber being pro vided with,downwardly curved pockets for afcentrallyfopening tlir'ottleialve at thecoiij, '1131! i stricted portion of said chamber, said valve being adapted in opening to produce a sin- `glo. unobstructed opening centralffof said enturi like mixing chamber.

12.' In a carbureter the combination/of a Venturi tube like mixing chamber into which a -fuel mixture? is adapted jt'o be projected 'provided with recesses in the walls, thereo Where said Venturi is of least cross-sectional area. and a centrally opening throttley valve provided with leaves adapted to recede into l said recesses when the valve is opened thereby permitting smooth Walls for the Venturi tube 'andan unobstructed passage therethrough.

13."In a carbureter the combination of a Venturi tube like mixing chamber into which a fuel mixture is adapted to be projected, a

centrally opening throttle valve comprising a pair of valve leaves and means 'for simultaneously moving said leaves in opposite directions to open and close said valve, said valve when open leavinga single unobstructed Venturi passage for the fuel mixture.

14. In a carbureter the combination of a Venturi tube like mixing chamber into leaving a single unobstructed smooth Walled Venturi passage for the fuel mixture.

15. In carbureter the combination of a Venturi tube like mixing chamber into which a fuel mixture is adapted to be projected7 a throttle valve at the constricted portion of said chamber and a heating coil below said valve transversely of said tubel whereby the fuel mixture is adapted to move in a uniformly convergingstream from the coil to the valve 'when said. valve is opened.

In testimony whereof7 have hereunto set my hand in the presence of two subscribing witnesses. l

WILLIAM P. BEPPE.

litnesses:

M. H. LooxwoonJ G. V. RAsMUssEN. 

